Flake8 fixes.

theano/sandbox/gpuarray/blas.py

 import os.path
 
-from theano import Op, Apply, config
+from theano import Apply, config
 
 from theano.compile import optdb
 from theano.gof import local_optimizer, LocalOptGroup
@@ -52,7 +52,7 @@ PyGpuArrayObject *gpublas_try_copy(PyGpuArrayObject *out,
 
 class GpuGemv(BlasOp, Gemv):
     def make_node(self, y, alpha, A, x, beta):
-        res = Gemv.make_node(self, y, alpha, A, x, beta)
+        Gemv.make_node(self, y, alpha, A, x, beta)
         A = as_gpuarray_variable(A)
         x = as_gpuarray_variable(x)
         y = as_gpuarray_variable(y)
@@ -180,7 +180,7 @@ gpugemm_inplace = GpuGemm(inplace=True)
 
 class GpuGer(BlasOp, Ger):
     def make_node(self, A, alpha, x, y):
-        res = Ger.make_node(self, A, alpha, x, y)
+        Ger.make_node(self, A, alpha, x, y)
         A = as_gpuarray_variable(A)
         x = as_gpuarray_variable(x)
         y = as_gpuarray_variable(y)
@@ -240,7 +240,7 @@ gpuger_inplace = GpuGer(destructive=True)
 
 class GpuDot22(BlasOp, Dot22):
     def make_node(self, x, y):
-        res = Dot22.make_node(self, x, y)
+        Dot22.make_node(self, x, y)
         x = as_gpuarray_variable(x)
         y = as_gpuarray_variable(y)
         assert x.dtype == y.dtype
@@ -291,6 +291,7 @@ class GpuDot22(BlasOp, Dot22):
 
 gpu_dot22 = GpuDot22()
 
+
 @local_optimizer([gpugemv_no_inplace], inplace=True)
 def local_inplace_gpuagemv(node):
     if node.op == gpugemv_no_inplace:
@@ -313,9 +314,11 @@ def local_inplace_gpuager(node):
     if node.op == gpuger_no_inplace:
         return [gpuger_inplace(*node.inputs)]
 
-gpuablas_opt_inplace = in2out(LocalOptGroup(
-        local_inplace_gpuagemv, local_inplace_gpuagemm, local_inplace_gpuager),
+gpuablas_opt_inplace = in2out(LocalOptGroup(local_inplace_gpuagemv,
+                                            local_inplace_gpuagemm,
+                                            local_inplace_gpuager),
                               name='gpuablas_opt_inplace')
+
 optdb.register('InplaceGpuaBlasOpt',
                gpuablas_opt_inplace,
                70.0, 'fast_run', 'inplace', 'gpuarray')

theano/sandbox/gpuarray/opt.py

@@ -621,6 +621,7 @@ def local_gpua_hgemm(node):
                                            shape_i(B, 1, fgraph))
         return gpugemm_no_inplace(C, 1.0, A, B, 0.0)
 
+
 @register_opt()
 @alpha_merge(GpuGemm, alpha_in=1, beta_in=2, nd=2)
 def local_gpuagemm_alpha_merge(node, *inputs):

theano/tests/test_flake8.py

@@ -164,7 +164,6 @@ whitelist_flake8 = [
     "sandbox/gpuarray/elemwise.py",
     "sandbox/gpuarray/type.py",
     "sandbox/gpuarray/__init__.py",
-    "sandbox/gpuarray/blas.py",
     "sandbox/gpuarray/kernel_codegen.py",
     "sandbox/gpuarray/conv.py",
     "sandbox/gpuarray/neighbours.py",